Wear-resistant layer on a component and process for the production thereof

Abstract

A wear-resistant layer on a component which is exposed to a high wear loading has a material mixture comprising at least one metallic material in powder form and a non-metallic oxide-dissolving fluxing agent in powder form which by the addition of a resin-like non-corroding stable binding agent is converted into a form which is applied to the component by being spread or laid thereon, and fused.

I claim: 
     
       1. A layer on a component which is exposed to a high wear loading, which comprises a material mixture comprising at least one metallic material in powder form and a non-metallic oxide-dissolving fluxing agent in powder form which by the addition of a non-corroding water-soluble stable binding agent is converted into a coatable paste for application to the component by being laid or spread thereon, and fused to form a hardened, wear resistant coating on said component having an exposed coating surface, the said metallic material being at least one of a Ni-B-Si base alloy, an alloy on a Ni-Cr-B-Si base, and a mixture of a Ni-B-Si alloy and a Ni-Cr-B-Si base alloy. 
     
     
       2. A layer according to claim 1 wherein the material mixture includes as a binding agent for the material mixture, salts of methacrylates. 
     
     
       3. A layer according to claim 2 wherein the material mixture includes benzene-soluble methacrylic acid esters as a binding agent for the material mixture. 
     
     
       4. A layer according to claim 1 including a polyurethane resin as a binding agent for the material mixture. 
     
     
       5. A layer according to claim 1 including an amount of binding agent in the material mixture of below 16% by volume. 
     
     
       6. A layer according to claim 5 wherein the amount of binding agent in the material mixture is from 2 to 8% by volume. 
     
     
       7. A layer according to claim 1 wherein the fluxing agent is at least one of boron-oxygen compounds and boron-fluorine-oxygen compounds. 
     
     
       8. A layer according to claim 1 wherein the proportion of fluxing agent in the material mixture is between 0.5 and 20% by volume. 
     
     
       9. A layer according to claim 8 wherein the proportion of fluxing agent in the material mixture is between 1 to 10% by volume. 
     
     
       10. A layer according to claim 1 including the addition of hard substances to the material mixture in powder form wherein the proportion of hard substances in the material mass is between 20 and 90% by volume. 
     
     
       11. A layer according to claim 10 wherein the proportion of hard substances in the material mass is below 80% by volume. 
     
     
       12. A layer according to claim 10 including carbides as the hard substance additives. 
     
     
       13. A layer according to claim 10 including at least one of the following as hard substance additives, tungsten carbides, borides, silicides, and nitrides. 
     
     
       14. A layer according to claim 10 including an addition of cobalt. 
     
     
       15. A process for the production of a protective layer on a component which is exposed to a high wear loading, which comprises mixing at least one metallic material in powder form and a non-metallic oxide-dissolving fluxing agent in powder form, and adding a resin-like non-corroding water soluble, stable binding agent to the material mixture, wherein the material mixture with the fluxing agent and the resin-like water soluble binding agent is converted into a coatable paste which after being applied to a member to be coated is hardened to form a hardened, wear resistant coating on said member having an exposed coating surface, the said metallic material being at least one of a Ni-B-Si base alloy, an alloy on a Ni-Cr-B-Si base, and a mixture of a Ni-B-Si alloy and a Ni-Cr-B-Si base alloy. 
     
     
       16. A process according to claim 15 including the step of applying said coatable paste to a member to form a hardened, wear resistant coating thereon. 
     
     
       17. A process according to claim 15 wherein the material mixture is formed into a strip at a temperature below 141° C. and hardened. 
     
     
       18. A process according to claim 17 wherein the material mixture is formed into a strip at a temperature between 80° and 140° C., and hardened. 
     
     
       19. A process according to claim 15 including mixing hard substances with the material mixture. 
     
     
       20. A process according to claim 19 including the step of coating the hard substances with a material selected from the group consisting of nickel and cobalt before mixing same with the material mixture. 
     
     
       21. A layer according to claim 2 wherein the material mixture includes water-soluble methacrylic acid esters as a binding agent for the material mixture. 
     
     
       22. A layer according to claim 13 including tungsten melt carbides as hard substance additives.